Excalibur bolts that are equipped with lighted nocks that have the grooved aluminum bushing in the rear of the shaft will accept this Lumenok Rhino nock. This package contains 3 nocks. We offer only orange nocks with ultra bright red LEDs. We do not supply the bushing that the nock fits into. These nocks weigh 20 grains and have a replaceable battery (Lumenok RBS) If you have questions regarding your bolts please call or contact us.